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|
/* ==========================================================================
Licensed under BSD 2clause license. See LICENSE file for more information
Author: Michał Łyszczek <michal.lyszczek@bofc.pl>
==========================================================================
------------------------------------------------------------
/ This is entry point of server, here things are initialized \
\ and main loop is started /
------------------------------------------------------------
\
\ \_\_ _/_/
\ \__/
(oo)\_______
(__)\ )\/\
||----w |
|| ||
==========================================================================
_ __ __ __ ____ _ __
(_)____ _____ / /__ __ ____/ /___ ____/ / / __/(_)/ /___ _____
/ // __ \ / ___// // / / // __ // _ \ / __ / / /_ / // // _ \ / ___/
/ // / / // /__ / // /_/ // /_/ // __// /_/ / / __// // // __/(__ )
/_//_/ /_/ \___//_/ \__,_/ \__,_/ \___/ \__,_/ /_/ /_//_/ \___//____/
========================================================================== */
#include "feature.h"
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <embedlog.h>
#include "config.h"
#include "bnwlist.h"
#include "globals.h"
#include "server.h"
#include "daemonize.h"
/* ==========================================================================
_ __ ____
____ _____ (_)_ __ ____ _ / /_ ___ / __/__ __ ____ _____ _____
/ __ \ / ___// /| | / // __ `// __// _ \ / /_ / / / // __ \ / ___// ___/
/ /_/ // / / / | |/ // /_/ // /_ / __/ / __// /_/ // / / // /__ (__ )
/ .___//_/ /_/ |___/ \__,_/ \__/ \___/ /_/ \__,_//_/ /_/ \___//____/
/_/
========================================================================== */
/* ==========================================================================
handles SIGINT and SIGTERM signals, it basicly sets global variable
g_shutdown to 1, to inform all module to exit. Also accept() from main
loop will receive EINTR so it doesn't stuck
========================================================================== */
static void sigint_handler(int signo)
{
if (signo == SIGTERM || signo == SIGINT)
{
if (g_shutdown)
{
/* someone hit ctrl-c second time, impatient fella */
el_print(ELN, "Double SIGTERM received, quiting immediately");
g_stfu = 1;
return;
}
el_print(ELN, "SIGTERM received, waiting for connection to finish");
g_shutdown = 1;
}
if (signo == SIGALRM)
g_sigalrm = 1;
}
/* ==========================================================================
__ __ _ ____
____ __ __ / /_ / /(_)_____ / __/__ __ ____ _____ _____
/ __ \ / / / // __ \ / // // ___/ / /_ / / / // __ \ / ___// ___/
/ /_/ // /_/ // /_/ // // // /__ / __// /_/ // / / // /__ (__ )
/ .___/ \__,_//_.___//_//_/ \___/ /_/ \__,_//_/ /_/ \___//____/
/_/
========================================================================== */
int main(int argc, char *argv[])
{
int rv;
struct sigaction sa;
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
if (config_init(argc, argv) != 0)
{
fprintf(stderr, "fatal error parsing configuration, cannot continue\n");
return 1;
}
/* configure logger for diagnostic logs */
el_init();
el_option(EL_THREAD_SAFE, 0);
el_option(EL_LEVEL, g_config.log_level);
el_option(EL_OUT, EL_OUT_FILE);
el_option(EL_TS, EL_TS_LONG);
el_option(EL_TS_TM, EL_TS_TM_REALTIME);
el_option(EL_TS_FRACT, EL_TS_FRACT_MS);
el_option(EL_FUNCINFO, 1);
el_option(EL_FINFO, 1);
el_option(EL_COLORS, g_config.colorful_output);
el_option(EL_FSYNC_EVERY, 0);
if (el_option(EL_FPATH, g_config.program_log) != 0)
{
fprintf(stderr, "WARNING couldn't open program log file %s: %s "
"logs will be printed to stderr\n",
g_config.program_log, strerror(errno));
el_option(EL_OUT, EL_OUT_STDERR);
}
/* configure logger to log queries */
el_oinit(&g_qlog);
el_ooption(&g_qlog, EL_THREAD_SAFE, 0);
el_ooption(&g_qlog, EL_LEVEL, EL_INFO);
el_ooption(&g_qlog, EL_OUT, EL_OUT_FILE);
el_ooption(&g_qlog, EL_TS, EL_TS_LONG);
el_ooption(&g_qlog, EL_TS_TM, EL_TS_TM_REALTIME);
el_ooption(&g_qlog, EL_PRINT_LEVEL, 0);
el_ooption(&g_qlog, EL_FSYNC_EVERY, 0);
if (el_ooption(&g_qlog, EL_FPATH, g_config.query_log) != 0)
{
fprintf(stderr, "WARNING couldn't open query log file %s: %s "
"query logs will be printed to stdout\n",
g_config.query_log, strerror(errno));
el_ooption(&g_qlog, EL_OUT, EL_OUT_STDOUT);
/* turn off stdout buffering, forcing query logs to appear
* immediately
*/
setvbuf(stdout, NULL, _IONBF, 0);
}
memset(&sa, 0, sizeof(sa));
sa.sa_handler = sigint_handler;
sigaction(SIGINT, &sa, NULL);
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGALRM, &sa, NULL);
config_print();
if (config_validate() != 0)
{
rv = 1;
goto config_validate_error;
}
if (bnw_init(g_config.list_file, g_config.list_type) != 0)
{
rv = 1;
el_print(ELF, "couldn't initialize list from file %s",
g_config.list_file);
goto bnw_error;
}
if (server_init() != 0)
{
rv = 1;
el_print(ELF, "couldn't start server, aborting");
goto server_error;
}
if (g_config.daemonize)
{
daemonize(g_config.pid_file, g_config.user, g_config.group);
}
server_loop_forever();
server_destroy();
rv = 0;
server_error:
bnw_destroy();
bnw_error:
if (g_config.daemonize)
{
daemonize_cleanup(g_config.pid_file);
}
config_validate_error:
return rv;
}
|
